Granted Patent
Utility
US 4,296,773 · App. 06/011,762
Hydraulic selector valve having joy stick control
Inventors:
Ronald W. Harshman, Lynn A. Dietrich
Patented Case
View Patent ↗
Granted: Oct 27, 1981
Filed: Feb 12, 1979
Inventors
Ronald W. Harshman
Lynn A. Dietrich
Assignee (at issue)
Walter Kidde & Co., Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.